A poem about baby's first home (5)
I believe the answer is:
abode
'home' is the definition.
(synonyms)
'a poem about baby's first' is the wordplay.
'poem' becomes 'ode' (ode is a type of poem).
'about' says to put letters next to each other.
'baby's first' becomes 'b' (1st letter of 'baby').
'ode' put after 'b' is 'bode'.
'a'+'bode'='ABODE'
(Other definitions for abode that I've seen before include "Dwelling, residence" , "Place of residence" , "Where one lives" , "Archaic dwelling place" , "stay" .)